[PATCH 04/19] scan-build.bbclass: Add class to enable clang static analyser

[Khem Raj <raj.khem@gmail.com>]

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 meta/classes-recipe/scan-build.bbclass | 60 ++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 meta/classes-recipe/scan-build.bbclass

diff --git a/meta/classes-recipe/scan-build.bbclass b/meta/classes-recipe/scan-build.bbclass
new file mode 100644
index 00000000000..e1a72de993e
--- /dev/null
+++ b/meta/classes-recipe/scan-build.bbclass
@@ -0,0 +1,60 @@
+# Copyright (C) 2018 Khem Raj <raj.khem@gmail.com>
+# Released under the MIT license (see COPYING.MIT for the terms)
+
+EXTRA_ANALYZER_OPTIONS += "-analyze-headers"
+EXTRA_ANALYZER_OPTIONS += "--force-analyze-debug-code"
+SCAN_BUILD ??= "1"
+SCAN_BUILD:class-native = ""
+SCAN_BUILD:class-nativesdk = ""
+SCAN_BUILD:class-cross = ""
+SCAN_BUILD:class-crosssdk = ""
+SCAN_BUILD:class-cross-canadian = ""
+
+CLANG_SCAN_SERVER_IP ??= "0.0.0.0"
+CLANG_SCAN_PORT ??= "8181"
+SCAN_RESULTS_DIR ?= "${TMPDIR}/static-scan/${PN}"
+
+CCSCAN ?= "${HOST_PREFIX}${TOOLCHAIN}"
+CXXSCAN:toolchain-clang ?= "${HOST_PREFIX}clang++"
+CXXSCAN:toolchain-gcc ?= "${HOST_PREFIX}g++"
+
+do_scanbuild() {
+        rm -rf ${SCAN_RESULTS_DIR}
+        scan-build --use-cc ${CCSCAN} --use-c++ ${CXXSCAN} --analyzer-target ${HOST_SYS} --html-title ${BP} -o ${SCAN_RESULTS_DIR} ${EXTRA_ANALYZER_OPTIONS} ${MAKE} ${PARALLEL_MAKE} ${EXTRA_OEMAKE}
+}
+
+do_scanview() {
+        bbplain "================================================================"
+        bbplain "Starting scan-view server at: http://${CLANG_SCAN_SERVER_IP}:${CLANG_SCAN_PORT}"
+        bbplain "Use Ctrl-C to exit"
+        bbplain "================================================================"
+        scan-view --host ${CLANG_SCAN_SERVER_IP} --port ${CLANG_SCAN_PORT} --allow-all-hosts --no-browser ${SCAN_RESULTS_DIR}/*/
+}
+
+do_scanview[depends] += "${PN}:do_scanbuild"
+do_scanbuild[depends] += "clang-native:do_populate_sysroot"
+#do_scanbuild[cleandirs] += "${SCAN_RESULTS_DIR}"
+do_scanbuild[dirs] += "${B}"
+do_scanview[dirs] += "${SCAN_RESULTS_DIR}"
+#do_build[recrdeptask] += "do_scanbuild"
+
+do_scanbuild[doc] = "Build and scan static analysis data using clang"
+do_scanview[doc] = "Start a webserver to visualize static analysis data"
+
+addtask scanbuild after do_configure before do_compile
+addtask scanview after do_scanbuild
+python () {
+    # Remove scanbuild task when scanning is not enabled or recipe does not have do_configure
+    if not(d.getVar('SCAN_BUILD') == "1") or not(d.getVar('TOOLCHAIN') == "clang") or oe.utils.inherits(d, 'allarch'):
+        for i in ['do_scanbuild', 'do_scanview']:
+            bb.build.deltask(i, d)
+    else:
+        cflags = d.getVar('CFLAGS', False) + d.getVar('TARGET_CC_ARCH', False) + d.getVar('TOOLCHAIN_OPTIONS', False)
+        cxxflags = d.getVar('CXXFLAGS', False) + d.getVar('TARGET_CC_ARCH', False) + d.getVar('TOOLCHAIN_OPTIONS', False)
+        d.setVar('CFLAGS', cflags)
+        d.setVar('CXXFLAGS', cxxflags)
+        if oe.utils.inherits(d, 'autotools'):
+            cachedvar = d.getVar('CACHED_CONFIGUREVARS', False)
+            cachedvar = cachedvar + " scan-build " + " --analyzer-target " + d.getVar('HOST_SYS', False) + " --use-cc " + d.getVar('CCSCAN', False) + " --use-c++ " + d.getVar('CXXSCAN', False)
+            d.setVar('CACHED_CONFIGUREVARS', cachedvar)
+}